

This postcard has been sold
American air mail envelope dated May 27, 1960, franked with two 4¢ 'Long May It Wave' stamps and a 'US AIR MAIL' cancellation indicating the first flight from Spokane to Calgary. Intended for Hubert Emerson in Van Nuys, California. The reverse shows a receipt cancellation in Calgary, Alberta, dated April 27, 1960.